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US 9,308,560 B2Granted
Clinical analyzer wash and method
AssigneeAbbott Laboratories
InventorsPatricia H. Ravalico, Charlie W. Wilson, III
Life of this patent
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Abstract
A clinical analyzer has been described that includes a probe to aspirate a fluid. The probe is washed between aspirations to reduce carryover. The wash operation includes both an internal and an external wash, where the internal wash operation is terminated prior to terminating the external wash. In one example, the probe wash can be implemented on an integrated clinical chemistry/immunoassay analyzer.
Claims12
A system comprising:
- an interior wash dispenser;
- an exterior wash dispenser;
- a first pump to pump wash fluid through the exterior wash dispenser onto an exterior surface of a probe;
- a second pump to pump wash fluid through the interior wash dispenser into an interior region of the probe and
- a controller to:
- activate the first pump to pump wash fluid on the exterior surface of the probe;
- activate the second pump to pump wash fluid through the interior region of the probe simultaneously as the first pump is pumping wash fluid on the exterior surface of the probe, the second pump activated after the first pump is activated;
- deactivate the second pump to terminate pumping wash fluid through the interior region of the probe;
- and
- deactivate the first pump to terminate pumping wash fluid on the exterior surface of the probe after the second pump is deactivated, wherein a duration of time of activation of the first pump to wash the exterior surface of the probe is based on an amount of liquid aspirated into the interior region of the probe.
7 more elements
Dependencies are inferred from the claim text.